Answer:
My total return is lower 1.05% because of my trades
Step-by-step explanation:
The total commission and spread I have to pay for trading five times in year is $150 (= $30 x 5)
The total return on the portfolio of $102,000 is $14,280 =(14%*$102,000)
So the total commission and spread / the total return = $150/$14.280 = 1.05%